TY  - BOOK
AU  - Fishburn P C
TI  - Interval orders and interval groups
T2  - Wiley-Inter science series in discrets mathematics
U1  - B217, M5 
PY  - 1985///
CY  - New York    
PB  -  John Wiley       
KW  -  Combinatories
KW  -  Permutation
KW  - Set theory
ER  -